===== 12 FIL GPU FILL | BIOS 19951204 System ROM Version 3.0 11/18/96 A
BadVaddr as the group starts: 00000480
Fill 02h (memory-transfer-commands.txt:12-22, :61-70): row y 400 from x 496, 64 wide.
GPUSTAT 5606200F at start
x 200h w 16                ................################................................
x 205h w 16                ................################................................
x 20Fh w 16                ................################................................
x 1FFh w 16                ################................................................
x 200h w 1                 ................################................................
x 200h w 15                ................################................................
x 200h w 17                ................################################................
x 200h w 0                 ................................................................
x 200h w 400h              ................................................................
x 200h w 410h              ................################................................
x 200h w 8010h             ................################................................
x FE00h w 16               ................################................................
x 600h w 16                ................################................................
x 200h w 16 h 0            ................................................................
x 200h w 16 h 200h         ................................................................
x 200h w 16 h 201h         ................################................................
x 200h w 3F1h: 1024 of 1024 in the row filled
x 200h w 3FFh: 1024 of 1024 in the row filled
x 3F0h w 30h: 16 of x 1008..1023, 32 of x 0..31 (################################)
y 510 h 4 at x 640: 32 of rows 510-511, 32 of rows 0-2 (32 each, rows 0-1 expected)
y 400 with bit 9 set: 16 of 16 at y 400
Fill colour to 15-bit, dither on (E1 bit 9) and mask set:
 070707: 0000 0000 0000 0000 / 0000 0000
 080808: 0421 0421 0421 0421 / 0421 0421
 0F0F0F: 0421 0421 0421 0421 / 0421 0421
 101010: 0842 0842 0842 0842 / 0842 0842
 FFFFFF: 7FFF 7FFF 7FFF 7FFF / 7FFF 7FFF
 0000F8: 001F 001F 001F 001F / 001F 001F
 F80000: 7C00 7C00 7C00 7C00 / 7C00 7C00
 00FF00: 03E0 03E0 03E0 03E0 / 03E0 03E0
check mask over 8000h: 7FFF
area 0..15 x 256..271 and offset 100,50: 16 of 16 at 200h,400
Waits that ran out: 0
Done.